Yamaha XT660Z Tenere Service Manual (2008)

Yamaha introduced the XT660Z Ténéré for the 2008 European model year, reviving one of the company's best-known adventure names in a modern fuel-injected single-cylinder platform. Yamaha showed the new model publicly in 2007 and described it as a machine that inherited the Ténéré name and Dakar-inspired adventure character while adding the comfort and range needed for long-distance travel. The factory specifically identified the XT660R as the mechanical starting point, then added a larger fuel tank and adventure-focused equipment to create a more travel-oriented motorcycle. Yamaha's official XT660Z Ténéré presentation documents the model's launch concept and core specification.

The engine is a 660 cm³ liquid-cooled, four-stroke SOHC single with a 100.0 × 84.0 mm bore and stroke and a 10.0:1 compression ratio. Electronic fuel injection replaced the carburetion associated with earlier generations of large Yamaha singles, using a Mikuni throttle body and ECU-controlled injector. The engine also retains dry-sump lubrication, a balancer, five-speed constant-mesh gearbox, wet multi-plate clutch and chain final drive. This combination gives the XT660Z the simple, tractable character expected of a single-cylinder adventure motorcycle while adding modern fuel control, emissions equipment and electronic diagnostics.

The chassis was designed around mixed road and off-road use. A diamond-type frame carries 21-inch front and 17-inch rear spoked wheels, with 210 mm of front suspension travel and 200 mm at the rear. Ground clearance is 260 mm and the seat height is 896 mm, giving the motorcycle the tall stance associated with long-travel adventure machines. Braking uses twin 298 mm front discs and a 245 mm rear disc. The factory manual lists a 23.0-liter fuel capacity and 208.5 kg weight with oil and fuel, emphasizing the long-distance range and durability that distinguished the Ténéré from the road-biased XT660 variants.

The XT660Z also continued a much older Yamaha lineage. The original XT600Z Ténéré appeared in 1983 as a production motorcycle strongly influenced by Yamaha's Paris-Dakar experience, and the Ténéré name became closely associated with large-capacity fuel tanks, long-distance off-road travel and big single-cylinder engines. Yamaha later described the XT660Z as a continuation of that tradition after the XT series evolved through changes including multi-valve cylinder heads and fuel injection. For related documentation, browse the Yamaha Tenere service manual category.

This listing is based on Yamaha factory publication 11D-F8197-E0, first edition May 2008. The manual explicitly identifies the XT660Z 2008 and model code 11D1 (EUR), and its final wiring diagram is labeled XT660Z 2008. It covers maintenance, chassis, engine, cooling, fuel injection, electrical diagnosis and troubleshooting. No later-year supplement sections are included, so the verified service-manual applicability is 2008 only rather than the legacy 2008-2015 range.